Example sentences of "that it be often difficult [verb] " in BNC.
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| 1 | Experience shows that it is often difficult to assess the extent of exposure to light that samples receive in the market and hence to estimate the degree of exaggeration or acceleration that any one test gives . |
| 2 | It should be noted that it is often difficult to compare different recognition systems as they are reported because differences in input data and equipment can affect performance . |
| 3 | The receipt of such a bonus has an effect far outside the regular annual rise , which again in the case of ICI is a matter of such Byzantine complexity that it is often difficult to know whether one is getting a good or a bad one ! |
| 4 | The Commission points out that it is often difficult to attribute responsibility , especially when damage is the cumulative result of activities undertaken by many parties . |
| 5 | A major problem with the operation of restrictive practices legislation is that it is often difficult to capture secret or verbal agreements between firms . |
| 6 | Native speakers do not recognise this , but foreign learners of English notice that it is often difficult to hear the unstressed parts of a word in ordinary speech . |
| 7 | It must be remembered that it is often difficult to get people to express themselves freely , that there is a tendency in any survey for interviewees to say what they think they are expected to say , and that individuals frequently find it hard to express subjective views on an aspect of their life which they might never have consciously considered before . |
| 8 | The problem is that it is often difficult to determine how long an individual has been drinking . |
| 9 | This brief examination of the inter-relationships between family , migration and urbanization should serve to illustrate the point that it is often difficult to establish any clear pattern of causation . |
| 10 | We have seen that it was often difficult to isolate the various sub-domains condensed and subsumed under the general categories of morality and immorality . |
| 11 | And Mr Malik , who generally left the school , adopted such a histrionic attitude that it was often difficult to tell whether he was praising God or auditioning for him . |